[jira] [Assigned] (FLINK-12979) Sending data to kafka with CsvRowSerializationSchema always adding a "\n", "\r","\r\n" at the end of the message

["Hugo Louro (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hugo Louro reassigned FLINK-12979:
----------------------------------

    Assignee: Hugo Louro

> Sending data to kafka with CsvRowSerializationSchema always adding a "\n", "\r","\r\n" at the end of the message
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-12979
>                 URL: https://issues.apache.org/jira/browse/FLINK-12979
>             Project: Flink
>          Issue Type: Bug
>          Components: API / Type Serialization System
>    Affects Versions: 1.8.0, 1.8.1, 1.8.2, 1.9.0, 2.0.0
>            Reporter: chaiyongqiang
>            Assignee: Hugo Louro
>            Priority: Major
>
> When sending data to kafka using CsvRowSerializationSchema, the CsvRowSerializationSchema#serialize method helps generating value for KafkaRecord,  which will call  CsvEncoder#endRow and in which  a _cfgLineSeparator will be added at the end of KafkaRecord.value.
> But For  CsvRowSerializationSchema#Builder , when you calling the mothod setLineDelimiter only "\n","\r","\r\n" could be used as the parameter.  
> It's not friendly when you want to send a message "123,pingpong,21:00" to kafka but kafka receives a message  "123,pingpong,21:00\r\n".
> I'm not sure about the reason for limitting the lineDelimiter to "\n","\r","\r\n" ？ In previous version and jackson-databind, there's no limits on lineDelimiter. 
> But at least it should let the application developer to set LineDelimiter with "".



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